Hitachi DK32EJ Reference Manual

OEM MANUAL:K6602771

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HITACHI

3.5 INCH MAGNETIC DISK DRIVE Reference Manual

For DK32EJ

FC-AL Interface Specification

Document Number : K6602771

SCSI 2/3 SPECIFICATIONS Hitachi, Ltd. Tokyo, Japan

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NOTICE TO USERS

While every effort has been made to ensure that the information provided herein is correct please feel free to notify us in the event of an error of inconsistency.

Hitachi makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties or merchantability or fitness for any purpose.

Further, Hitachi reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation to notify any person of such revisions or changes.

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REVISION TABLE

Remarks AD : Addition, CH : Change, CR : Correction, DL : Deletion REV Date Signature Page Description Remarks

DWN : Shiino

CHK

: Watanabe

0 ’02.03.29

APPD

: Takayasu

All Initial Release

’02.06.13

DWN : Shiino 15 Change of revision number of related CH

CHK

: Watanabe

Document.

APPD : Takayasu 23 Correct the number of alternate CR

Cylinders.

26,27 Delete the description about error

recovery parameter.

27,28,

204,208

Change of retry count. CH

120,122,

128

Addition of description about Device Control.

154 Correct the about Byte. CR 168 Change of description about Recovery

Time Limit.

183 Change of description about Queue

Algorithm Modifier.

196 Correct the about MRIE=4. CR 210 Change the default value of Queue

Algorithm Modifier.

227 Correct the about Reservation Key. CR 262 Correct the Self Test Code value. CR 250 Correct the Receive Diagnostic Result

Command.

299,300

301

Addition of description about 0389,0904,0CFF,11FF

310 Correct the about 4700. CR

’02.12.19

DWN : Shiino 110 Addition description about defect AD

CHK : Hida Specification range.

APPD : Takayasu 209 Change the default value of

DISC,FSW.

210 Correct the about Byte0,Byte2. CR

307 Addition of description about 4483. AD

REVISION

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REV Date Signature Page Description Remarks

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REV Date Signature Page Description Remarks

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CONTENTS

1 GENERAL DESCRIPTION.................................................................................................15

1.1 APPLICATION.............................................................................................................15

1.2 RELATED DOCUMENT .............................................................................................. 15

1.3 FUNCTION OUTLINE.................................................................................................. 16

1.4 GLOSSARY................................................................................................................. 19

2 PRODUCT SPECIFICATION OUTLINE.............................................................................21

2.1 ADDRESSING ............................................................................................................. 21

2.2 DISK FORMAT ............................................................................................................ 21

2.2.1 CYLINDER ALLOCATION...................................................................................21

2.2.2 FORMAT PROCESSING......................................................................................22

2.3 ERROR RETRY........................................................................................................... 26

2.3.1 READ ERROR RETRY.........................................................................................26

2.3.2 WRITE ERROR RETRY .......................................................................................26

2.3.3 VERIFY ERROR RETRY......................................................................................27

2.3.4 SEEK ERROR RETRY.........................................................................................27

2.3.5 SPINDLE ERROR RETRY ................................................................................... 27

2.3.6 ERROR RETRY CONTROL.................................................................................27

2.4 SUPPORTED SCSI COMMANDS...............................................................................28

3 FIBRE CHANNEL INTERFACE .........................................................................................31

3.1 TOPOLOGY................................................................................................................. 31

3.2 FRAMES...................................................................................................................... 34

3.2.1 FRAME FORMAT .................................................................................................34

3.3 FIBRE CHANNEL ARBITRATED LOOP(FC-AL) ...................................................... 39

3.3.1 ARBITRATED LOOP PHYSICAL ADDRESS(AL_PA) .......................................39

3.3.2 LOOP INITIALIZATION........................................................................................ 41

3.3.3 ARBITRATED LOOP ACCESS ...........................................................................46

3.3.4 PUBLIC LOOP .....................................................................................................46

3.4 ORDERED SETS.........................................................................................................49

3.5 LINK SERVICE............................................................................................................ 52

3.5.1 ABORT SEQUENCE(ABTS)................................................................................53

3.5.2 BASIC ACCEPT(BA_ACC) .................................................................................53

3.5.3 BASIC REJECT(BA_RJT)................................................................................... 54

3.5.4 ACCEPT(ACC)..................................................................................................... 55

3.5.5 LINK SERVICE REJECT(LS_RJT) ..................................................................... 56

3.5.6 N_PORT LOGIN(PLOGI) .....................................................................................58

3.5.7 LOGOUT(LOGO).................................................................................................. 63

3.5.8 FABRIC LOGIN(FLOGI).......................................................................................64

3.5.9 READ LINK ERROR BLOCK(RLS)..................................................................... 69

3.5.10 REINSTATE RECOVERY QUALIFIER(RRQ)...................................................... 70

3.5.11 REQUEST NODE CAPABILITIES INFORMATION(RNC) (Not support) .......... 72

3.5.12 FABRIC ADDRESS NOTIFICATION(FAN)..........................................................74

3.5.13 PROCESS LOGIN(PRLI) .....................................................................................76

3.5.14 PROCESS LOGOUT(PRLO) ...............................................................................80

3.5.15 DISCOVER N_PORT SERVICE PARAMETERS(PDISC)...................................83

3.5.16 DISCOVER ADDRESS(ADISC)...........................................................................85

3.5.17 THIRD PARTY PROCESS LOGOUT(TPRLO) (Not support)............................ 86

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4 SCSI BUS............................................................................................................................88

4.1 SCSI BUS FUNCTIONS.............................................................................................. 88

4.1.1 COMMAND RECEPTION.....................................................................................88

4.1.2 COMMAND QUEUING.........................................................................................88

4.1.3 UNIT ATTENTION CONDITION...........................................................................89

4.1.4 RESET CONDITION.............................................................................................89

4.2 FCP INFORMATION UNIT.......................................................................................... 90

4.2.1 FCP_CMND..........................................................................................................90

4.2.2 FCP_XFER_READY.............................................................................................93

4.2.3 FCP_DATA ...........................................................................................................93

4.2.4 FCP_RSP..............................................................................................................94

4.3 FRAME SEQUENSE ................................................................................................... 97

4.4 ENCLOSURE SERVICE INTERFACE(ESI) SPECIFICATION .................................. 99

4.4.1 DISCOVERY PROCESS ...................................................................................... 99

4.4.2 COMMAND PROCESS......................................................................................101

4.4.3 WRITE PROCESS..............................................................................................102

4.4.4 READ PROCESS ............................................................................................... 102

5 SCSI COMMANDS............................................................................................................103

5.1 COMMAND STRUCTURE......................................................................................... 103

5.1.1 OPERATION CODE ...........................................................................................105

5.1.2 LOGICAL UNIT NUMBER ................................................................................. 106

5.1.3 RELATIVE ADDRESS........................................................................................106

5.1.4 LOGICAL BLOCK ADDRESS...........................................................................106

5.1.5 TRANSFER LENGTH ........................................................................................107

5.1.6 CONTROL BYTE................................................................................................108

5.1.7 RESERVED ........................................................................................................ 108

5.1.8 VENDOR UNIQUE..............................................................................................108

6 COMMAND DESCRIPTIONS........................................................................................... 109

6.1 FORMAT UNIT:(04H)................................................................................................. 109

6.2 INQUIRY:(12H)........................................................................................................... 118

6.3 LOG SELECT:(4CH) .................................................................................................. 129

6.4 LOG SENSE:(4DH) .................................................................................................... 155

6.5 MODE SELECT:(15H)................................................................................................ 157

6.6 MODE SELECT (10):(55H) ........................................................................................ 197

6.7 MODE SENSE:(1AH) ................................................................................................. 199

6.8 MODE SENSE (10):(5AH).......................................................................................... 217

6.9 PERSISTENT RESERVE IN:(5Eh) ........................................................................... 219

6.10 PERSISTENT RESERVE OUT:(5Fh) ....................................................................... 226

6.11 READ:(08H)................................................................................................................ 231

6.12 READ (EXTENDED):(28H)......................................................................................... 232

6.13 READ BUFFER:(3CH)................................................................................................ 234

6.14 READ CAPACITY:(25H) ............................................................................................ 238

6.15 READ DEFECT DATA:(37H) ..................................................................................... 240

6.16 READ DEFECT DATA(12) :(B7H)............................................................................. 243

6.17 READ LONG:(3EH).................................................................................................... 245

6.18 REASSIGN BLOCKS:(07H)....................................................................................... 247

6.19 RECEIVE DIAGNOSTIC RESULTS:(1CH) ................................................................ 250

6.20 RELEASE:(17H)......................................................................................................... 251

6.21 RELEASE(10):(57H)................................................................................................... 252

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6.22 REPORT LUNS:(A0h)............................................................................................... 253

6.23 REQUEST SENSE:(03H) ........................................................................................... 255

6.24 RESERVE:(16H)......................................................................................................... 256

6.25 RESERVE(10):(56H) .................................................................................................. 258

6.26 REZERO UNIT:(01H).................................................................................................. 259

6.27 SEEK:(0BH) ................................................................................................................ 260

6.28 SEEK (EXTENDED):(2BH) ........................................................................................ 261

6.29 SEND DIAGNOSTIC:(1DH)........................................................................................ 262

6.30 START / STOP UNIT:(1BH)....................................................................................... 276

6.31 SYNCHRONIZED CACHE:(35H)............................................................................... 277

6.32 TEST UNIT READY:(00H).......................................................................................... 278

6.33 VERIFY:(2FH)............................................................................................................. 279

6.34 WRITE:(0AH).............................................................................................................. 281

6.35 WRITE (EXTENDED):(2AH)....................................................................................... 282

6.36 WRITE AND VERIFY:(2EH)....................................................................................... 284

6.37 WRITE BUFFER:(3BH).............................................................................................. 286

6.38 WRITE LONG:(3FH) ................................................................................................... 289

6.39 WRITE SAME:(41H)................................................................................................... 290

6.40 XDREAD:(52H)........................................................................................................... 291

6.41 XDWRITE:(50H) ......................................................................................................... 292

6.42 XPWRITE:(51H).......................................................................................................... 294

7 SENSE DATA....................................................................................................................295

7.1 SENSE DATA FORMAT............................................................................................ 295

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Figures

Figure 2-1 Track Skew (Skew Factor n)........................................................................24

Figure 2-2 Cylinder Skew ( Skew Factor n )................................................................. 24

Figure 2-3 Sector Reallocation......................................................................................25

Figure 3-1 Fibre Channel Topology..............................................................................31

Figure 3-2 Topology of private loop ............................................................................. 32

Figure 3-3 Topology of public loop...............................................................................33

Figure 3-4 Multi Loop Figure 3-5 Redundant Loop.......................33

Figure 3-6 Frame Format ...............................................................................................34

Figure 3-7 Frame Header Format..................................................................................35

Figure 3-8 Structure of Loop Initialization frame........................................................ 42

Figure 3-9 Loop initialization flow diagram .................................................................43

Figure 3-10 Address Identifier.......................................................................................46

Figure 3-11 NL_Port Initialization Flow ........................................................................48

Figure 4-1 Discovery Flow Chart ................................................................................100

Figure 4-2 Phase in SFF-8067 enclosure ...................................................................101

Figure 4-3 Data transfer for Write...............................................................................102

Figure 4-4 Data transfer for Read................................................................................102

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Tables

Table 2-1 Commands Supported .................................................................................. 28

Table 2-2 Commands Not Supported ...........................................................................30

Table 3-1 Summary of Fibre Channel Topology..........................................................32

Table 3-2 Specification of R_CTL/TYPE field...............................................................37

Table 3-3 F_CTL field......................................................................................................38

Table 3-4 AL_PA addressing..........................................................................................39

Table 3-5 AL_PA value priorities...................................................................................39

Table 3-6 AL_PA mapped to bit maps ..........................................................................40

Table 3-7 Type of LIP ...................................................................................................... 41

Table 3-8 Private Loop Addressing and Public Loop Addressing............................47

Table 3-9 Ordered Sets...................................................................................................49

Table 3-10 SOF Delimiters..............................................................................................49

Table 3-11 EOF Delimiters.............................................................................................. 50

Table 3-12 Primitive Signals .......................................................................................... 50

Table 3-13 Primitive Sequences.................................................................................... 51

Table 3-14 Link Service Frames....................................................................................52

Table 3-15 BA_ACC payload for ABTS.........................................................................53

Table 3-16 BA_RJT payload...........................................................................................54

Table 3-17 ACC payload.................................................................................................55

Table 3-18 LS_RJT payload ...........................................................................................56

Table 3-19 PLOGI payload..............................................................................................58

Table 3-20 Common Service Parameters(PLOGI payload) ........................................59

Table 3-21 N_Port Name(PLOGI payload)....................................................................60

Table 3-22 Node_Name(PLOGI payload)......................................................................60

Table 3-23 Class 3 Service Parameters(PLOGI payload) ...........................................61

Table 3-24 Vendor Version Level(PLOGI Payload)...................................................... 62

Table 3-25 ACC payload for PLOGI...............................................................................62

Table 3-26 LOGO payload .............................................................................................. 63

Table 3-27 ACC payload for LOGO ...............................................................................63

Table 3-28 FLOGI payload..............................................................................................64

Table 3-29 Common Service Parameters(FLOGI payload).........................................65

Table 3-30 N_Port Name(FLOGI payload) .................................................................... 66

Table 3-31 Node_Name(FLOGI payload)......................................................................66

Table 3-32 Class 3 Service Parameters(FLOGI payload)............................................67

Table 3-33 Vendor Version Level(FLOGI Payload)......................................................68

Table 3-34 ACC payload for FLOGI...............................................................................68

Table 3-35 RLS payload.................................................................................................. 69

Table 3-36 ACC payload for RLS...................................................................................69

Table 3-37 RRQ payload.................................................................................................70

Table 3-38 ACC payload for RRQ..................................................................................71

Table 3-39 RNC payload................................................................................................. 72

Table 3-40 ACC payload for RNC..................................................................................73

Table 3-41 FAN Payload .................................................................................................74

Table 3-42 PRLI payload................................................................................................. 76

Table 3-43 ACC payload for PRLI..................................................................................78

Table 3-44 Response Code............................................................................................ 79

Table 3-45 PRLO payload...............................................................................................80

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Table 3-46 ACC payload for PRLO................................................................................81

Table 3-47 Response Code............................................................................................ 82

Table 3-48 PDISC payload..............................................................................................83

Table 3-49 ACC payload for PDISC............................................................................... 84

Table 3-50 ADISC payload..............................................................................................85

Table 3-51 ACC payload for ADISC...............................................................................85

Table 3-52 TPRLO payload.............................................................................................86

Table 3-53 ACC payload for TPRLO.............................................................................. 86

Table 4-1 Information Unit .............................................................................................90

Table 4-2 FCP_CMND Payload ...................................................................................... 90

Table 4-3 FCP_XFER_READY Payload.........................................................................93

Table 4-4 FCP_DATA Payload........................................................................................93

Table 4-5 FCP_RSP Payload..........................................................................................94

Table 4-6 Response Information...................................................................................96

Table 4-7 ESI command format...................................................................................101

Table 5-1 Standard Command Descriptor Block for 6-byte Commands ................ 104

Table 5-2 Standard Command Descriptor Block for 10-byte Commands .............. 104

Table 5-3 Standard Command Descriptor Block for 12-byte Commands .............. 105

Table 5-4 Operation Code............................................................................................105

Table 5-5 Control Byte Format .................................................................................... 108

Table 6-1 Format Unit Command Variations.............................................................. 111

Table 6-2 Defect List Header........................................................................................ 112

Table 6-3 Defect List --- Block Format................................................................... 114

Table 6-4 Defect List --- Byte from Index Format ................................................. 114

Table 6-5 Defect List --- Physical Sector Format.................................................. 115

Table 6-6 Initialization Pattern Descriptor..................................................................115

Table 6-7 IP Modifier..................................................................................................... 116

Table 6-8 Standard Inquiry Data.................................................................................. 119

Table 6-9 Data Transfer Speed .................................................................................... 122

Table 6-10 Supported Vital Product Data...................................................................123

Table 6-11 Unit Serial Number.....................................................................................124

Table 6-12 Implemented Operating Definition Page ................................................. 125

Table 6-13 Operating Definition...................................................................................126

Table 6-14 Device Identification..................................................................................126

Table 6-15 Jumper Information Page..........................................................................127

Table 6-16 PCR and Parameter List Length Fields ................................................... 129

Table 6-17 SP and DS Fields........................................................................................130

Table 6-18 Page Control Field (PC).............................................................................130

Table 6-19 Log Page Format........................................................................................132

Table 6-20 Log Page Codes.........................................................................................132

Table 6-21 Log Parameter............................................................................................133

Table 6-22 Threshold Met Criteria...............................................................................136

Table 6-23 Supported Log Pages................................................................................138

Table 6-24 Error Counter Read Page (Page Code = 3H)............................................139

Table 6-25 Parameter Codes for Error Counter Pages ............................................. 140

Table 6-26 Non-Medium Error Page (Page Code = 6H) .............................................. 141

Table 6-27 Non-Medium Error Event Parameter Codes............................................142

Table 6-28 Last n Error Events Page(Page Code = 7H).............................................142

Table 6-29 Temperature Page(Page Code = DH) ........................................................ 144

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Table 6-30 Start-Stop Cycle Counter Page(Page Code = 0EH)................................. 144

Table 6-31 Application Client Page(Page Code = 0FH)..............................................147

Table 6-32 General usage application client parameter data...................................148

Table 6-33 Self-Test Results Page(Page Code = 10H) ...............................................149

Table 6-34 Self-Test Results Log Parameter Format ................................................ 150

Table 6-35 Self-Test Results Values............................................................................151

Table 6-36 Informational Exceptions Page (Page Code = 2FH)................................152

Table 6-37 Factory Log Page (Page Code = 3EH)....................................................153

Table 6-38 Mode Select Parameter List......................................................................160

Table 6-39 Read - Write Error Recovery Page (Page Code = 1H).............................163

Table 6-40 Error Control Bit Combinations................................................................166

Table 6-41 Disconnect - Reconnect Page (Page Code = 2H ) ...................................169

Table 6-42 Format Device Page (Page Code = 3H).....................................................172

Table 6-43 Rigid Disk Geometry Page (Page Code = 4H)..........................................175

Table 6-44 Verify Error Recovery Page (Page Code = 7H).........................................178

Table 6-45 Caching Page (Page Code = 8H) ...............................................................179

Table 6-46 Control Mode Page (Page Code = AH)...................................................... 182

Table 6-47 Notch and Partition Page (Page Code = CH)............................................185

Table 6-48 XOR Control Page (Page Code = 10H)......................................................187

Table 6-49 Enclosure Service Management Page (Page Code = 14H).....................189

Table 6-50 Fibre Channel Specification Page (Page Code = 19H) ............................ 190

Table 6-51 Power Condition Control Page (Page Code = 1AH) ................................ 192

Table 6-52 Informational Exceptions Control Page (Page Code = 1CH)..................193

Table 6-53 Method of Reporting Informational Exceptions field.............................195

Table 6-54 MODE SELECT (10) Header ......................................................................198

Table 6-55 Mode Sense Data........................................................................................201

Table 6-56 Sense Data Length.....................................................................................202

Table 6-57 Mode Page 1H Descriptor Value ................................................................ 204

Table 6-58 Mode Page 2H Descriptor Value................................................................205

Table 6-59 Mode Page 3H Descriptor Value................................................................206

Table 6-60 Mode Page 4H Descriptor Value................................................................207

Table 6-61 Mode Page 7H Descriptor Value................................................................208

Table 6-62 Mode Page 8H Descriptor Value................................................................209

Table 6-63 Mode Page AH Descriptor Value ............................................................... 210

Table 6-64 Mode Page CH Descriptor Value ............................................................... 211

Table 6-65 Mode Page 10H Descriptor Value..............................................................212

Table 6-66 Mode Page 10H Descriptor Value..............................................................213

Table 6-67 Mode Page 19H Descriptor Value..............................................................214

Table 6-68 Mode Page 1AH Descriptor Value ............................................................. 215

Table 6-69 Mode Page 1CH Descriptor Value ............................................................. 216

Table 6-70 MODE SENSE (10) Header.........................................................................218

Table 6-71 PERSISTENT RESERVE IN Service Action Code...................................220

Table 6-72 READ KEYS Parameter Data.....................................................................220

Table 6-73 READ RESERVATION Parameter Data..................................................... 221

Table 6-74 PERSISTENT RESERVE IN reservation descriptor................................222

Table 6-75 Persistent reservation scope codes ........................................................ 224

Table 6-76 Persistent Reservation Type Code...........................................................225

Table 6-77 PERSISTENT RESERVE OUT Service Action Code...............................227

Table 6-78 PERSISTENT RESERVATION OUT Parameter List................................. 228

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Table 6-79 PERSISTENT RESERVE OUT Service Actions and Valid Parameters..230

Table 6-80 Read Buffer Mode ...................................................................................... 234

Table 6-81 Read Buffer Header....................................................................................236

Table 6-82 Read Buffer Descriptor.............................................................................. 237

Table 6-83 Echo Buffer Descriptor.............................................................................. 237

Table 6-84 Read Capacity Data....................................................................................239

Table 6-85 Defect List Format......................................................................................240

Table 6-86 Read Defect Header ................................................................................... 241

Table 6-87 Read Defect Header ................................................................................... 244

Table 6-88 Reassign Blocks Defect List.....................................................................248

Table 6-89 REPORT LUNS Parameter List Format....................................................254

Table 6-90 Self-Test Code Field Values ...................................................................... 262

Table 6-91 Diagnostic Page Format............................................................................265

Table 6-92 Supported Diagnostic Page (Code = 00H)................................................266

Table 6-93 Enclosure Configuration page..................................................................267

Table 6-94 Enclosure Control page ............................................................................267

Table 6-95 Enclosure Status page .............................................................................. 268

Table 6-96 Enclosure Help Text page .........................................................................268

Table 6-97 Enclosure String Out page........................................................................268

Table 6-98 Enclosure String In page...........................................................................269

Table 6-99 Enclosure Threshold Out/In page............................................................269

Table 6-100 Enclosure Array Control page................................................................ 270

Table 6-101 Enclosure Array Status page..................................................................270

Table 6-102 Enclosure Element Description page.................................................... 271

Table 6-103 Short Enclosure Status page.................................................................. 271

Table 6-104 Translate Address Page (Code = 40H)....................................................272

Table 6-105 Translation Format...................................................................................272

Table 6-106 Read Alternate Page (Code = 40H).......................................................... 273

Table 6-107 Diagnostic Parameter List....................................................................... 274

Table 6-108 Sub Command Codes.............................................................................. 275

Table 6-109 Write Buffer Mode....................................................................................287

Table 6-110 Write Buffer Header..................................................................................288

Table 7-1 Extended Sense Data Format.....................................................................295

Table 7-2 Sense Keys ................................................................................................... 297

Table 7-3 Additional Sense Codes & Qualifiers.........................................................299

Table 7-4 Field Pointer..................................................................................................312

Table 7-5 Actual Retry Count.......................................................................................312

Table 7-6 Progress Indication......................................................................................313

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Preface

This manual describes the specifications of the Small Computer System Interface (SCSI) functions supported by the HITACHI 3 1/2 model magnetic disk drives.

1 GENERAL DESCRIPTION

1.1 APPLICATION

This manual applies to the SCSI logical interface specification and Fibre Channel logical interface of the magnetic disk drive. Refer to the individual Product Specifications for the physical specification of the product.

1.2 RELATED DOCUMENT

·Product Specification; DK32EJ Product Specifications K6602762

·ANSI Specification;

(1) Fibre Channel Protocol for SCSI (FCP) X3.269-199X Revision 012 (2) Fibre Channel Arbitrated Loop (FC-AL) X3T11/Project 960D/Rev 4.5 (3) Fibre Channel Arbitrated Loop (FC-AL-2) X3T11/Project 1133D/Rev 7.0 (4) Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA) X3T11/Project 1162DT/Rev. 2.1 (5) Fibre Channel Fabric Loop Attachment (FC-FLA) T11/Project 1235-DT/Rev. 2.7 (6) Fibre Channel Physical and Signaling Interface (FC-PH) X3T11/Project 755D/Rev.4.3 (7) Fibre Channel Physical and Signaling Interface-2 (FC-PH-2) X3T11/Project 901D/Rev.7.4 (8) Fibre Channel Physical and Signaling Interface-3 (FC-PH-3) X3T11/Project 1119D/Rev.9.4 (9) Small Computer Systems Interface-2 (SCSI-2) X3.301-1997 (10) SCSI-3 Primary Commands (SPC) X3T10/Project 955D/Rev 11a (11) SCSI-3 Block Commands (SBC) X3T10/Project 996D/Rev 8c (12) SCSI-3 Primary Commands-2 (SPC-2) X3T10/Project 1236D/Rev 20 (13) SCSI-3 Primary Commands-3 (SPC-3) X3T10/Project 1416D/Rev 5 (14) SCSI-3 Controller Commands (SCC) X3T10/Project 1047D/Rev 6c (15) SFF-8045 Specification for 40-pin SCA-2 Connector w/Parallel Section Rev 4.5 (16) SFF-8067 Specification for 40-pin SCA-2 Connector w/Bidirectional ESI Rev 2.8 (17) SCSI-3 Enclosure Service Command set (SES) X3T10/Project 1212D/Rev 8b (18) Fibre Channel Physical Interface (FC-PI) NCITS/Project 1235D/Rev 13

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1.3 FUNCTION OUTLINE

The disk drive is connected to the host computer through the Fibre Channel Interface. The word “Controller” may be substituted for the disk drive since this manual describes only Fibre Channel interface functions which are implemented by the controller in the disk drive. It’s features are listed below.

(1) ANSI STANDARD COMPLIANCE

The disk drive implements the SCSI-2 and some SCSI-3 specifications and Fibre Channel Interface specifications which conform to the ANSI standard listed in article 1.2.

(2) AUTOMATIC ALTERNATE ASSIGNMENT/ACCESS

By the FORMAT UNIT or REASSIGN BLOCKS command, alternate sectors are

automatically assigned in place of defective sectors. An alternate sector is allocated next to the defective sector on FORMAT UNIT, so, extra rotational latency may be avoided. The access to an alternate sector is done automatically on the read or write operation.

(3) AUTOMATIC ERROR CORRECTION

The automatic error correction scheme with ECC is capable for an error correction

of the medium defect. The On the Fly error correction is also capable for the

medium defect and does not require the extra rotational delay.

Refer to the Product Specifications for details.

(4) AUTOMATIC ERROR RETRY

The error recovery function is automatically initiated in case that an error

occurred during access to the disk drive.

(5) AUTOMATIC POWER-SAVING CONTROL

The automatic power-saving function is supported to reduce the power

consumption and increase the life time of the magnetic heads and the electronic

circuits. This is automatically initiated in an idle condition whenever there are

no pending process by the host command.

(6) AUTOMATIC READ/WRITE REALLOCATION

The automatic read/ write reallocation function is supported. When an error is

detected on reading the data(assuming a data field recoverable error) or writing

the data(assuming a servo field error), this function automatically assigns an

alternate sector in place of the defective sector and stores the data on the

alternated sector prior to sending the completion status.

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(7) COMMAND QUEUING

One command per initiator(host computer) is enqueued(Untagged Command

Queuing) and/or maximum 128 commands as total number of commands from all host computers are enqueued(Tagged Command Queuing).

(8) COMMAND RE-ORDERING

The disk drive executes the multiple tagged commands with the advanced

command re-ordering algorithm. It can optimize the execution time of enqueued

commands and provide the high performance for a random or multi-threading

access environment.

(9) COMPACT DRIVE w/EMBEDDED CONTROLLER

The disk drive with fully embedded SCSI controller has the 3 1/2 inch industrial

standard form factor.

(10) DEFERRED ERROR REPORTING

The deferred error function reports an error to the subsequent command received

from the host computer if an error occurs after the completion with the GOOD

status returned.

(11) DOWN-LOADABLE FIRMWARE

The firmware can be changed by the multi-WRITE BUFFER commands.

(12) HIGH-SPEED DATA TRANSFER

High-Speed Data Transfer modes are available as follows.

· Max. 200MB/S

· Max. 100MB/S

(13) MULTI-HOST/MULTI-TARGET CONNECTION

Based on the Fibre Channel Arbitrated Loop (FC-AL), maximum 126

devices(including host computers) and one fabric can be connected on the same

loop. Therefore, a flexible system configurations can be available.

However, the number of connectable host computers is a maximum of 32.

(14) MULTI-SEGMENTED BUFFER

The large capacity data buffer is equipped and this is maintained as a multi-

segmented buffer. A multi-segmented buffer scheme provides a high performance

for a read/write from the host computer which has the multi-tasking feature.

Refer to the Product Specifications for the data buffer size.

(15) READ AHEAD CACHE

The read ahead cache function provides a high performance for a sequential read

access. Reading data which the host computer has not yet requested into data

buffer is done in advance and directly transferring data to the host computer is

done without any latency at sequential access.

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(16) SECTOR INTERLEAVE

A 1 : 1 interleave is supported.

(17) SELECTABLE BLOCK LENGTH

A 512 bytes block length is supported as a default and other block length is also

available after the disk re-format.

Refer to the Product Specification for details.

(18) SMART(Self-Monitoring Analysis and Reporting)

The SMART(Self-Monitoring Analysis and Reporting) function is supported. This

function enables to perform an analysis, logging and reporting the error to the host

computer by the disk drive itself .

(19) TRACK/CYLINDER SKEW

In order to avoid a rotational latency for the seek to the adjacent head or cylinder,

Head/ Cylinder Skew function which shifts the sector configuration at the head/

cylinder boundary (between the last sector of the head/ cylinder and the first sector

of the next head/ cylinder) is supported, so that the read write head can be

positioned to the first sector of the next head/ cylinder. Therefore, reading/

writing of contiguous blocks is done without an extra rotational delay, even if an

access is done over the physical track/cylinder boundary.

(20) WRITE CACHE

The write cache function provides a high performance for a sequential write access.

It may return the completion with the GOOD status for a WRITE command after

successfully receiving the data from the host computer and prior to having

successfully stored the data on the disk medium.

(21) DUPLEX FUNCTION

During the data transferring , the disk Drive can queue commands received in

same port.

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1.4 GLOSSARY

Bit number A number that represents the weighted position of one byte.

Bit n represents a value of 2n.

Command Descriptor Block A command block that is used to communicate requests

from

(CDB) : an initiator to a target. XXH , XXh A hexadecimal representation of a number (XX with a

subscript H/h represents a hexadecimal number).

Initiator A SCSI device (usually a host computer) that requests

another SCSI device to perform an operation. Logical unit A physical device that is addressable throug h a target. Logical unit number (LUN) An encoded 6 - bit identifier for a logical unit. Reserved (or R) A term used for a bits, bytes, fields, or code values that are

set aside for future standardization. Target An SCSI device (usually a disk drive w/ SCSI controller)

that performs an operation that is requested by an

initiator. Vendor unique (VU) A bit, byte, field, or code value that can be uniquely

specified by each vendor. Fibre Channel Arbitrated Loop One form of the topology in a fiber channel.

(FC-AL) An Arbitration is performed, in case it consists of Node/Fabric of a maximum of 127 and a circuit is built on a loop.Topology in a fiber channel One form.

Arbitrated Loop Physical Address Address information assigned to a meaning for (AL_PA) every port in FC-AL. Each port gains AL_PA

through loop initialization processing (the port

which has not gained AL_PA shifts to non-

participating mode). Private Loop FC-AL which is not connected to Fabric (it is Public Loop

when connecting with Fabric).

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L_Port A port connectable with FC-AL. (In Node, it is NL_Port.

In Fabric,it is FL_Port) Circuit It is built by two arbitrary ports on FC-AL. Transmission of

a frame is possible only among 2 ports which built the

circuit. Node The device which has a Fiber Channel Interface. Fabric An entity that interconnects various N_Ports attached to

it and is capable of routing frames by using only the D_ID

information in a frame header. Frame An indivisible unit of information used by Signaling

Protocol. Data Frame A frame containing information meant for FC-4/ULP(SCSI)

or the Link application. Sequence A set of one or more Data Frames with a common identifier

transmitted unidirectionally from one N_Port to another

N_Port. Exchange The basic mechanism which transfers information

consisting of one or more related non-concurrent

Sequences which may flow in the same or opposite

directions.

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2 PRODUCT SPECIFICATION OUTLINE

This chapter describes the logical subjects of Product Specification. Refer to the Product Specification for physical information which are not included herein.

2.1 ADDRESSING

The host computer addresses the target logical unit (controller and drive) using the methods described below.

(1) AL_PA The device connected to FC-AL acquires address information (AL_PA) through loop

initialization processing. AL_PA is uniquely assigned to every which is connected on the same loop device (an

initiator or target). (2) Logical unit number The host computer can address a logical unit in one of the following ways :

· Specifying the logical unit in the logical unit number field of the FCP_CMND

Payload.

Note : The controller supports only the logical unit number 0.

2.2 DISK FORMAT

2.2.1 CYLINDER ALLOCATION

All cylinders on disks are assigned for the system area and the user area. The system area is preserved for the controller’s use and may not be accessible from the host computer.

The system area is allocated on both outermost cylinders, and it contains the following types of data ;

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· Control parameters (MODE SELECT, INQUIRY and LOG)

· Defect list (manufacture and grown)

· Control program (Downloadable Firmware) etc.

The data in system area is duplicated for data integrity. The user area consists of the diagnostic cylinder, the data area. The user area,

except the data area, may not be accessible from the host computer. The diagnostic cylinder is allocated for the diagnostic use when the SEND

DIAGNOSTIC command is executed and is called "CE Cylinder". The user data is stored in the data area.

2.2.2 FORMAT PROCESSING

The host computer can format the data area by using FORMAT UNIT and MODE SELECT command. It can also reallocate each defective block by using REASSIGN BLOCKS command.

Note : This SCSI controller formats the diagnostic cylinder as well as the data

area when a Format Unit command is executed.

The outline of the format process is given below. The detail of format processing is shown in the description of ;

·FORMAT UNIT command ( Refer to 6.1 ),

·REASSIGN BLOCKS command ( Refer to 6.18 )

·MODE SELECT command ( Refer to 6.5 ). (1) Block Length

The Block Length indicates the byte length which is the minimum unit of data that can be accessed from the host computer. The default value of block length is 512 bytes. The block length can be changed by specifying the necessary values of MODE SELECT command in fields given below.

·Block Descriptor Byte 5,6,7 Block Length

·Format parameter Byte 12, 13 Data Bytes per physical sector

The value specified in both of these fields should be the same. If the values differ , the value entered in the Block Descriptor will be used.

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(2) Alternate Spare Area

The controller allocates 14 local alternate cylinders per notch as an Alternate

Spare Area for the defective sector.

(3) Defect Management

Defect management is the assignment of alternate spare sectors for defective sectors caused by media flaws. The host computer may access the data block as defect-free media by the defect management. The defect management consists of four schemes based on four defect sources as shown below.

P scheme --- Defects identified by manufacturing process.

These defects are recorded in the system area as P list.

( Primary Defect list ) C scheme --- Defects detected by medium verification. D scheme --- Defects specified by defect list of FORMAT UNIT command from the

host computer. G scheme --- Defects grown after manufactured.

These defects are detected by previous C and D scheme, and recorded

in the system area as G list. ( Grown Defect list ) The host computer may specify any combination of defect management schemes

with CDB ( Command Descriptor Block ) of FORMAT UNIT command and defect list.

The controller uses P, C and G schemes as a default mode if the defect management scheme is not specified ( i.e., CDB byte 1, Bit 4, FmtData = 0).

(4) Sector Interleave

In order to facilitate speed matching between host bus transfer rate and the disk drive transfer rate, the sector interleave function allows formatting " Physical Block ( sector ) " and "Logical Block " with a specified interval. The Interleave value is specified by the CDB of the FORMAT UNIT command, this controller supports sector Interleave factor (n=1) only.

(5) Track Skew In order to avoid a rotational latency on the head switching, the controller implements Track Skew which shifts the sector arrangement from each other among tracks in the same cylinder.

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Figure 2-1 explains the details of Track Skew.

Sector Sector Number Head 0 Head 1

n sectors

Figure 2-1 Track Skew (Skew Factor n)

(6) Cylinder Skew

The controller implements Cylinder Skew which shifts the sector array between cylinders ( i.e., between the last track of a cylinder and the first track of the next cylinder) to avoid a rotational latency when a 1 track seek is performed.

Cyl m Last Head

Cyl (m+1) Head 0

n sectors

Figure 2-2 Cylinder Skew ( Skew Factor n )

When the skew factor n (the physical sector number between the last logical block of a certain cylinder and the first logical block of the next cylinder) corresponds to the 1 track seeking time, the continuous blocks over two cylinders can be accessed with minimum rotational latency.

(7) Format Processing

The controller formats all data area and makes logical blocks accessible from the host computer by FORMAT UNIT command in accordance with specified block length, alternate spare area, defect management, sector interleave and skew factor(s). All data in the Data Area is deleted by executing the FORMAT UNIT command. The controller identifies a sector which was specified by defect schemes ( P, D and G schemes ) as defective, and assigns an alternate spare sector for the defective sector.

012

N-1N23401

0--N-01

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The replacement sector is assigned to the next defective sector, to reduce rotational latency.

The controller executes a verification after formatting if C scheme is specified. If an error is found, the controller identifies the error sector as defective and reformats the track and the cylinder. The controller adds defects identified by D and C schemes to the current G list and saves the new G list in the system area.

(8) Block Reassignment

Unrecoverable error blocks caused by growing defects may be reassigned by the REASSIGN BLOCKS command. By REASSIGN BLOCKS command, the controller identifies one or more sectors of the specified logical block as defective, and reassigns them as alternate spare sectors. The error block address ( logical block address ) is informed to the host computer by information bytes of sense data. An example of reallocating an alternate spare sector is shown in Figure 2-3.

Error sector Sector number

Before

Defective sector (Bad Sector)

After

Reallocated (with sector skipping)

Figure 2-3 Sector Reallocation

(9) Suggestion for Format Processing

· It is required to reformat medium by the FORMAT UNIT command if the block length and/or the number of alternate spare area was changed by the MODE SELECT command.

A command to access the medium is reported the CHECK CONDITION

status with the NOT READY sense key and Medium Format Corrupted sense code if the FORMAT UNIT command is not executed after the change with the related Mode parameter.

· This sense key is also reported when the Format command is terminated during a format.

0123N

Alternate

Spare Sector

(Reserved

023

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· It is suggested to specify P, G and C schemes ( i.e., to use Primary and Grown lists, and to execute verify processing ) when specifying defect management.

· The D scheme of defect management is not necessary for normal operation. Since the controller automatically reads P and G lists in system area and formats medium, the host computer does not need to specify the defect.

The D scheme is convenient for simulating defective sectors for evaluation purpose.

· It is suggested to set TB(Transfer Block) bit in Error Recovery Parameter of the MODE SELECT command and to issue the READ command for an error block if error data is needed for the data recovery of the block which the REASSIGN BLOCKS command is applied to. The controller transfers the error block data to the host computer.

2.3 ERROR RETRY

The controller performs the following retry procedures when an error is detected. The following explanation describes only typical retry method.

The controller may use the retry method which is not described in this manual

when an actual retry procedure is taken.

2.3.1 READ ERROR RETRY

The controller retries up to 255 times for read error while utilizing Track offset and/or Slice Level function etc. An error count is made per each sector. The host computer can change the error management of the controller with the read-write error recovery parameter (Page Code 1H) of the MODE SELECT

command.

2.3.2 WRITE ERROR RETRY

The controller retries up to 255 times with the Slice Level etc. The host computer can change the error management of the controller with the read-write error recovery parameter (Page Code 1H) of the MODE SELECT

command.

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2.3.3 VERIFY ERROR RETRY

The controller performs the same retry as the read error retry mentioned in section 2.3.1 READ ERROR RETRY for the verify error during the verify operation. The host computer can change the error management of the controller with the verify error recovery parameter (Page Code 7H) of the MODE SELECT command.

2.3.4 SEEK ERROR RETRY

The controller performs the same retry as the read error retry or write error retry mentioned in section 2.3.1 READ ERROR RETRY and 2.3.2 WRITE ERROR RETRY for seek error during the seek action.

2.3.5 SPINDLE ERROR RETRY

The controller retries the spin up operation 4 times when a start spindle error occurs during execution of the Start Unit command or the Auto Start operation. The controller also retries the spin up operation once when an unexpected spin down error occurs during execution of the medium access command.

2.3.6 ERROR RETRY CONTROL

The host computer can change the number of retries of the controller with the error recovery parameter of MODE SELECT command. The error recovery parameter may be specified to the controller by each host computer independently.

The summary of error control is explained below. Refer to the description of 6.5 MODE SELECT command.

(1) Default Mode

The controller specifies the processing given below as Default Mode.

·Executing the following number of retries until error is recovered.

Read Error 128 retries Write Error 128 retries

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·However, if the error in the data field is correctable by ECC the controller

corrects the error using ECC, and terminates the recovery procedure (this is applicable when EER=1).

(2) Retry Count

The host computer can select the retry count by specifying the counts to the retry count field of the error recovery parameter.

Notes for Retry Count

·It is recommended to specify the retry count value at more than 128 times in

normal operation.

·The controller performs the internal retry before the execution of retries

specified by the host computer. If an error is correctable, the controller corrects the error using ECC during the internal retry. When the error is recovered by the internal retry, the controller may not report the recovered error to the host computer even if the PER of MODE Parameter page 01H is set.

2.4 SUPPORTED SCSI COMMANDS

This controller supports the group 0,1,2 and 5 commands listed in Table 2-1 based on SCSI-2 command set and additionally some SCSI-3 command set.

Table 2-1 Commands Supported

Operation

Code

Group 0 Command Name Reference

TEST UNIT READY 6.32

REZERO UNIT 6.26

REQUEST SENSE 6.23

FORMAT UNIT 6.1

REASSIGN BLOCKS 6.18

WRITE 6.34

SEEK 6.27

INQUIRY 6.2

MODE SELECT 6.5

RESERVE 6.24

RELEASE 6.20

MODE SENSE 6.7

START/STOP UNIT 6.30

RECEIVE DIAGNOSTIC RESULTS

6.19

SEND DIAGNOSTIC 6.29

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Operation

Code

Group 1 Command Name Reference

READ CAPACITY 6.14

READ (EXTENDED) 6.12

WRITE (EXTENDED) 6.35

SEEK (EXTENDED) 6.28

WRITE AND VERIFY 6.36

VERIFY 6.33

SYNCHRONIZED CACHE 6.31

READ DEFECT DATA 6.15

WRITE BUFFER 6.37

READ BUFFER 6.13

READ LONG 6.17

WRITE LONG 6.38

Operation

Code

Group 2 Command Name Reference

WRITE SAME 6.39

LOG SELECT 6.3

LOG SENSE 6.4

XDWRITE 6.41

XPWRITE 6.42

XDREAD 6.40

MODE SELECT (10) 6.6

RESERVE(10) 6.25

RELEASE(10) 6.21

MODE SENSE (10) 6.8

PERSISTENT RESERVE IN 6.9

PERSISTENT RESERVE OUT 6.10

Operation

Code

Group 5 Command Name Reference

REPORT LUNS 6.22

READ DEFECT DATA(12) 6.16

This controller does not support the group 0, 1 and 2 commands listed in Table 2-2 based on SCSI-2 command set.

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Table 2-2 Commands Not Supported

Operation Code Group 0 Command Name

COPY

PREVENT/ALLOW MEDIUM REMOVAL

Operation Code Group 1 Command Name

SEARCH DATA HIGH

SEARCH DATA EQUAL

SEARCH DATA LOW

SET LIMITS

PRE-FETCH

LOCK/UNLOCK CACHE

COMPARE

COPY AND VERIFY

Operation Code Group 2 Command Name

CHANGE DEFINITION

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